BrutusMUD help

BAN,UNBAN

Level: 61

Usage: ban [<all | new | select> <site>]
unban <site>

These commands prevent anyone from a site with a hostname containing the
site substring from logging in to the game. You may ban a site to ALL, NEW
or SELECT players. Banning a site to NEW players prevents any new players
from registering. Banning a site to ALL players disallows ANY connections
from that site. Banning a site SELECTively allows only players with site-ok
flags to log in from that site. Ban with no argument returns a list of
currently banned sites.